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Thread: Pitting corrosion on aluminum coping

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    Pitting corrosion on aluminum coping

    I am getting pitting corrosion on a section of aluminum coping closest to the equipment pad. I assume this is due the SWG system. How can I repair the coping to fill the holes?
    35,000 Gal
    Flow rate on filter coming soon

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    JoyfulNoise's Avatar
    Join Date
    May 2015
    Tucson, AZ

    Re: Pitting corrosion on aluminum coping

    Can you post a picture?

    Generally speaking, you really don't want aluminum anywhere near a pool and certainly not near an SWG pool. If you do have aluminum, then it should be anodized aluminum. Also, any aluminum near the pool should be tied to a sacrificial anode (magnesium works best for aluminum). This will slow down the corrosion.
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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